/* ============================================================
   MENTALE FAMÍLIA - DESIGN SYSTEM (STRICT PURPLE BAN)
   Cores: Deep Navy (#1e293b), Clinical Teal (#0f766e), Emerald (#10b981)
   Fundo: Slate Light (#f8fafc), Superfície (#ffffff)
   ============================================================ */

:root {
    --bg-page: #f8fafc;
    --bg-surface: #ffffff;
    --bg-card: #ffffff;
    --bg-muted: #f1f5f9;
    --border-color: #e2e8f0;
    --border-focus: #0f766e;

    --color-primary: #1e293b;
    --color-primary-dark: #0f172a;
    --color-accent: #0f766e;
    --color-accent-hover: #115e59;
    --color-accent-light: #ccfbf1;
    --color-success: #10b981;
    --color-success-bg: #ecfdf5;
    --color-warning: #d97706;
    --color-warning-bg: #fffbeb;
    --color-danger: #dc2626;
    --color-danger-bg: #fef2f2;

    --text-main: #0f172a;
    --text-muted: #64748b;
    --text-sub: #475569;
    --text-inverse: #ffffff;

    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-page);
    color: var(--text-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container {
    width: 100%;
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header & Navbar */
.site-header {
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.brand-badge {
    background: var(--color-primary);
    color: #fff;
    font-weight: 800;
    font-size: 18px;
    width: 38px;
    height: 38px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.brand-text h1 {
    font-size: 18px;
    color: var(--color-primary);
    line-height: 1.2;
}

.brand-text p {
    font-size: 11px;
    color: var(--color-accent);
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Hero Section */
.hero-section {
    padding: 48px 0 36px;
    text-align: center;
}

.hero-title {
    font-size: 36px;
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1.25;
    margin-bottom: 14px;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-sub);
    max-width: 720px;
    margin: 0 auto 32px;
}

/* Key Input Bar (Destaque para iniciar teste) */
.key-activation-card {
    background: var(--bg-surface);
    border: 2px solid var(--color-accent);
    border-radius: var(--radius-lg);
    padding: 24px 32px;
    max-width: 760px;
    margin: 0 auto 50px;
    box-shadow: var(--shadow-lg);
    text-align: left;
}

.key-card-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.key-card-header h3 {
    font-size: 18px;
    color: var(--color-primary);
}

.key-card-header span {
    font-size: 20px;
}

.key-form {
    display: flex;
    gap: 12px;
}

.key-input {
    flex: 1;
    font-family: monospace;
    font-size: 16px;
    font-weight: bold;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    padding: 14px 18px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    outline: none;
    transition: border-color 0.2s;
}

.key-input:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.15);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    font-weight: 600;
    padding: 13px 24px;
    min-height: 48px;
    border-radius: var(--radius-sm);
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: background-color 0.2s, transform 0.1s;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background: var(--color-accent);
    color: #fff;
}

.btn-primary:hover {
    background: var(--color-accent-hover);
}

.btn-dark {
    background: var(--color-primary);
    color: #fff;
}

.btn-dark:hover {
    background: var(--color-primary-dark);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-main);
}

.btn-outline:hover {
    background: var(--bg-muted);
}

.btn-whatsapp {
    background: #16a34a;
    color: #fff;
}

.btn-whatsapp:hover {
    background: #15803d;
}

.btn-block {
    width: 100%;
}

/* Vitrine de Testes (11 Instrumentos) */
.section-title {
    font-size: 26px;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 8px;
    text-align: center;
}

.section-sub {
    font-size: 16px;
    color: var(--text-muted);
    text-align: center;
    margin-bottom: 36px;
}

.instruments-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
    margin-bottom: 60px;
}

.instrument-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 22px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s, box-shadow 0.2s;
}

.instrument-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: #cbd5e1;
}

.inst-head {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.inst-icon {
    font-size: 28px;
    line-height: 1;
}

.inst-head h4 {
    font-size: 17px;
    color: var(--color-primary);
}

.inst-desc {
    font-size: 13.5px;
    color: var(--text-sub);
    line-height: 1.5;
    margin-bottom: 16px;
    flex: 1;
}

.inst-meta {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--text-muted);
    border-top: 1px solid #f1f5f9;
    padding-top: 10px;
}

/* Pricing Section */
.pricing-section {
    background: #f1f5f9;
    border-radius: var(--radius-lg);
    padding: 48px 32px;
    margin-bottom: 60px;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
    margin-top: 32px;
}

.pricing-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 28px 24px;
    display: flex;
    flex-direction: column;
    position: relative;
    box-shadow: var(--shadow-sm);
}

.pricing-card.featured {
    border: 2px solid var(--color-accent);
    box-shadow: var(--shadow-lg);
    transform: scale(1.02);
}

.featured-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-accent);
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    padding: 4px 12px;
    border-radius: 20px;
    letter-spacing: 0.5px;
}

.plan-name {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 6px;
}

.plan-price {
    font-size: 32px;
    font-weight: 800;
    color: var(--color-primary);
    margin: 14px 0 6px;
}

.plan-price span {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-muted);
}

.plan-unit {
    font-size: 13px;
    color: var(--color-accent);
    font-weight: 600;
    margin-bottom: 20px;
}

.plan-features {
    list-style: none;
    margin-bottom: 24px;
    flex: 1;
}

.plan-features li {
    font-size: 13.5px;
    color: var(--text-sub);
    padding: 6px 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.plan-features li::before {
    content: "✓";
    color: var(--color-success);
    font-weight: bold;
}

/* Card Genérico / Auth / Checkout */
.auth-card {
    max-width: 520px;
    margin: 60px auto;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 36px;
    box-shadow: var(--shadow-lg);
}

.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 6px;
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    font-size: 15px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    outline: none;
    transition: border-color 0.2s;
    background: #fff;
    color: var(--text-main);
}

.form-control:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.15);
}

/* Alerts */
.alert-box {
    padding: 16px;
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
    font-size: 14px;
}

.alert-warning {
    background: var(--color-warning-bg);
    border: 1px solid #fcd34d;
    color: #92400e;
}

.alert-danger {
    background: var(--color-danger-bg);
    border: 1px solid #fca5a5;
    color: #991b1b;
}

.alert-success {
    background: var(--color-success-bg);
    border: 1px solid #86efac;
    color: #166534;
}

/* Footer */
.site-footer {
    border-top: 1px solid var(--border-color);
    background: var(--bg-surface);
    padding: 32px 0 24px;
    margin-top: 60px;
    font-size: 13px;
    color: var(--text-muted);
}

/* Responsividade */
@media (max-width: 768px) {
    .hero-title { font-size: 28px; }
    .hero-subtitle { font-size: 16px; }
    .key-form { flex-direction: column; }
    .pricing-card.featured { transform: none; }
    .auth-card { padding: 24px 20px; margin: 24px auto; }
}